I'm working on a productivity report for a group of 10 employees over a time period of 10 months. For each of the 10 employees, I computed mean productivity (widgets produced per 8 hour day) for the 10 month period. I ran a weighted proc means with the weight variable being the total number of widgets each employee produced over the 10 months or Sum_App variable) and the variable for the mean was the individuals mean productivity value for the 10 months(widgets divided by days worked or Over_Avg variable). The weighted mean was 24.80 with a min of 6.11 and a max of 31.96, but the Standard Deviation is showing a value of 288.25 which seems very odd to me considering the range of scores 6.11 to 31.96. Is this standard deviation something that shouldn't be used and is inaccurrate or could it really be correct? This is the code I used: proc means data=lwall ; var Over_Avg; weight Sum_App; run;
... View more